CN105659431B - Secondary cell - Google Patents

Secondary cell Download PDF

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Publication number
CN105659431B
CN105659431B CN201480056145.1A CN201480056145A CN105659431B CN 105659431 B CN105659431 B CN 105659431B CN 201480056145 A CN201480056145 A CN 201480056145A CN 105659431 B CN105659431 B CN 105659431B
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CN
China
Prior art keywords
cabinet
lid
fluid
heat
air duct
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Active
Application number
CN201480056145.1A
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Chinese (zh)
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CN105659431A (en
Inventor
胁田惠一
斗野纲士
大坂伸一郎
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NGK Insulators Ltd
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NGK Insulators Ltd
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Publication of CN105659431A publication Critical patent/CN105659431A/en
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/65—Means for temperature control structurally associated with the cells
    • H01M10/655—Solid structures for heat exchange or heat conduction
    • H01M10/6556—Solid parts with flow channel passages or pipes for heat exchange
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/36—Accumulators not provided for in groups H01M10/05-H01M10/34
    • H01M10/39—Accumulators not provided for in groups H01M10/05-H01M10/34 working at high temperature
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/36—Accumulators not provided for in groups H01M10/05-H01M10/34
    • H01M10/39—Accumulators not provided for in groups H01M10/05-H01M10/34 working at high temperature
    • H01M10/3909—Sodium-sulfur cells
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/61—Types of temperature control
    • H01M10/613—Cooling or keeping cold
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/65—Means for temperature control structurally associated with the cells
    • H01M10/653—Means for temperature control structurally associated with the cells characterised by electrically insulating or thermally conductive materials
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/65—Means for temperature control structurally associated with the cells
    • H01M10/655—Solid structures for heat exchange or heat conduction
    • H01M10/6551—Surfaces specially adapted for heat dissipation or radiation, e.g. fins or coatings
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/65—Means for temperature control structurally associated with the cells
    • H01M10/656—Means for temperature control structurally associated with the cells characterised by the type of heat-exchange fluid
    • H01M10/6561—Gases
    • H01M10/6563—Gases with forced flow, e.g. by blowers
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/65—Means for temperature control structurally associated with the cells
    • H01M10/658—Means for temperature control structurally associated with the cells by thermal insulation or shielding
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/204—Racks, modules or packs for multiple batteries or multiple cells
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/271—Lids or covers for the racks or secondary casings
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/61—Types of temperature control
    • H01M10/615—Heating or keeping warm
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/233—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by physical properties of casings or racks, e.g. dimensions
    • H01M50/24—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by physical properties of casings or racks, e.g. dimensions adapted for protecting batteries from their environment, e.g. from corrosion
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10—Energy storage using batteries

Abstract

The present invention provides a kind of secondary cell, without changing the heat insulating construction of thermally insulated container according to the height of load, can carry out optimum operation.Secondary cell includes the cabinet (14) of heat insulating construction, and upper surface has opening, and inside is accommodated with assembled battery (18)；The lid (20) of heat insulating construction, the opening of closed box (14)；And air duct (50), it is arranged between cabinet (14) and lid (20), fluid circulates inside it.

Description

Secondary cell
Technical field
The present invention relates to a kind of secondary cells for having cooling device.
Background technique
In general, implementing the frequency adjustment of electric system, power train by multiple generators, battery in system etc. The adjustment of the electric power and supply power of system.In addition, also being come from by implementations such as multiple generators or batteries in more situation The generated output of generating electricity by natural energy device and plan output power difference adjustment or hair from generating electricity by natural energy device The variation of electrical power mitigates.Battery is compared to general power generation function high speed change output power, this frequency in electric system Rate adjustment, the generated output from generating electricity by natural energy device with plan output power difference adjustment, electric system electricity consumption It is effective in terms of the adjustment of power and supply power.
Also, as the high-temperature operation type battery connecting with electric system, such as sodium-sulfur battery can be enumerated (hereinafter, note Make NaS battery).The NaS battery is by solid electrolyte tube isolation storage as the metallic sodium of active material and the structure of sulphur High temperature secondary battery.Therefore, if NaS battery is heated to about 300 DEG C, the electrochemistry by two active materials of melting is anti- It answers and generates the defined energy.Also, in general, NaS battery merges mould made of interconnection so that multiple monocells are erected collection The form of block battery uses.That is, modular battery has the following structure, the circuit (circuit string) of multiple monocells will be connected in series simultaneously Connection connection is contained in thermally insulated container on the basis of the chunking to be at least connected in series to two or more to constitute chunking.
In NaS battery in use, multiple thermally insulated containers are loaded (stacking) in vertical direction, a mould is constituted Block column, then multiple module columns are set side by side, constitute a cabinet (package).Also, each module of control cabinet is set The control device (see, for example special open 2004-55373 bulletin) of battery.
In special open 2004-55373 bulletin, as the intracorporal temperature control method of case, lower box or side also Have the INO Intake Open oral area communicated with outside, there is the exhaust port portion communicated with outside on cabinet top, and can be changed The aperture opening ratio in exhaust port portion.
Summary of the invention
Problems to be solved by the invention
However, when the load of the electric system such as summer or winter is higher, since the electric discharge output higher or time is longer, Therefore it there are the heat loss that the calorific value of NaS battery is more than vacuum insulation vessel, generates to the case where the accumulation of heat of thermally insulated container inside. If the balance between calorific value and heat loss is broken generation accumulation of heat, the internal temperature of the thermally insulated container of NaS battery can be excessive Rise.Even if having battery capacity, if temperature is more than 360 DEG C, also can be as unfavorable condition the reason of, not preferably.It therefore, can be with Consider, such as set vacuum insulation structure for the cabinet for being accommodated with assembled battery, the lid of the opening of closed box is arranged For atmosphere heat insulating construction, to avoid the accumulation of heat in thermally insulated container.
On the other hand, when the load of the electric system such as spring or autumn is lower, or the power generation such as wind-power electricity generation is changed and is put down When homogenizing, since discharge time is shorter, there are the calorific value of NaS battery be lower than thermally insulated container heat loss the case where.? In this case, there is the consumption power of the heater maintained for battery module temperature to keep NaS battery to work well Become excessive situation.If the consumption power of heater is excessive, it is used to indicate discharge power amount disappearing relative to NaS battery The efficiency for charge-discharge for consuming the ratio of quantity of power (charge power amount+heater power amount) can reduce, not preferably.Therefore, it may be considered that It sets vacuum insulation structure together by the cabinet of thermally insulated container and lid, using the accumulation of heat in thermally insulated container, inhibits charge and discharge Electrical efficiency reduces.
In this wise, for the optimum operation of secondary cell, according to the height of load, the insulation for changing thermally insulated container can be enumerated Structure, but whole thermally insulated containers are all implemented with such method and is difficult and unpractical.
The present invention is proposed in view of the above project, and its purpose is to provide a kind of secondary cells, according to load Just, without changing the physics heat insulating construction of thermally insulated container, optimum operation can be carried out.
A technical solution to solve project
[1] secondary cell of the invention comprising: heat insulating construction cabinet, upper surface have opening, Inside is accommodated with the assembled battery being made of multiple monocells；The lid of heat insulating construction closes the opening of the cabinet； And air duct, it is arranged between the cabinet and the lid, fluid circulates inside it.That is, feature of the invention exists In with fluid is introduced from outside into, the fluid circulates inside it, and the air duct of the fluid is discharged to outside.Herein, outside The outside of portion's expression secondary cell.
Firstly, when the load of the electric system such as spring or autumn is lower, or the power generation such as wind-power electricity generation changes equalization When, since discharge time is shorter, in the case where previous, there are the heat loss that the calorific value of NaS battery is lower than thermally insulated container. In the case, there are the possibility that efficiency for charge-discharge reduces.But in the secondary cell, due to by cabinet and lid one And it is set as heat insulating construction, therefore the intracorporal accumulation of heat of case can be utilized, even with heater power, it is only necessary to which less power is Can, so as to inhibit efficiency for charge-discharge to reduce.
On the other hand, when the load of the electric system such as summer or winter is higher, due to electric discharge export the higher or time compared with It is long, therefore there are the possibility that the calorific value of NaS battery is more than the heat loss of secondary cell.Especially in the secondary battery, due to It sets the higher heat insulating construction of thermal insulation together by cabinet and lid, therefore there are the intracorporal accumulation of heats of case to lead to the interior of cabinet The possibility that portion's temperature excessively rises.But in the secondary cell, at least has and be arranged between cabinet and lid, and fluid The air duct circulated inside it.Therefore, from the outside of secondary cell, air duct circulation of the cooling fluid in secondary cell is inhaled Heat is received, and then external discharge of the fluid of high temperature to secondary cell, the intracorporal heat of case are discharged to outside cabinet.That is, cabinet Inside radiated.Even if cabinet and lid are all the containers as vacuum insulation vessel with higher thermal insulation as a result, It can be also cooled efficiently in cabinet.As a result, also case can be made intracorporal even if the electric discharge output higher or time is longer Temperature maintains defined temperature range, and the assembled battery in cabinet can be made to operate under best effort environment.
[2] in the present invention, the air duct is made of metal, and the secondary cell can have board member, is arranged described Between assembled battery and the air duct, at least there is electrical insulating property.In the case, even if air duct is made of metal, can also prevent Only air duct is contacted with assembled battery, so as to avoid the short circuit between monocell.
[3] in the present invention, the air duct is arranged below the lid, the air duct and the assembled battery it Between sand also can be set.Since the thermal coefficient of sand is smaller, the temperature of the fluid in air duct due to short transverse heat transfer, It is mitigated before reaching assembled battery, so as to keep the temperature of short transverse of the monocell in assembled battery more equal It is even.
[4] in the present invention, the gap of the cabinet and the assembled battery and the cabinet and the lid it Between be filled with sand, the air duct can at least have multiple fins for extending towards the assembled battery.In addition, as the fin Piece can enumerate plate shaped fin, waveform fin, sheet fin etc..
In the case, it even if being filled with sand between cabinet and lid, also can be improved from assembled battery to air duct Heat transfer, so as to effectively reduce the intracorporal temperature of case.In addition, the structural rigidity in air duct is got higher by installation fins, It can prevent thermal deformation caused by the cryogen in the cabinet and pipeline of high temperature.As a result, among air duct, can at least it make case The entirety of the pipeline for the part (heat delivery section) that the heat generated in vivo conveys together with fluid maintains preferred height model It encloses.
[5] in the present invention, the air duct can have: metal fluid introduction part, imported fluid；Made of metal Heat delivery section, the downstream side of the fluid introduction part is set, and is arranged between the lid and the cabinet, At least the heat generated in the cabinet is conveyed together with the fluid；And metal radiating part, it is arranged in the heat The downstream side for measuring delivery section, the heat is discharged outward together with the fluid.
The fluid of heat delivery section is directed by fluid introduction part as a result, is circulated between cabinet and lid.Usually For, since the heat that assembled battery generates is propagated upward (lid), the heat propagated upwards is flowed in air duct Dynamic fluid downstream conveys together, is discharged via radiating part to outside cabinet.
[6] in the case, the lid can have roof and eaves, with close the cabinet upper surface opening Mode is arranged, the fluid introduction part can along the first side wall of the cabinet, and towards the eaves of the lid with It is arranged between the first side wall of the cabinet, the roof and institute in the lid can be set in the heat delivery section It states between cabinet, the radiating part can be from the second sidewall and the lid opposite with the first side wall of the cabinet Start between the eaves, is arranged along the second sidewall of the cabinet.
At the same time between cabinet and lid with vacuum insulation structure, it can be easy to set up air duct, and can be Heat delivery section is arranged in the part of the calorie spread generated by assembled battery.
[7] moreover, at least described the first side wall of the cabinet and the second sidewall can be made of metal, institute respectively Stating fluid introduction part can be separately positioned with the first side wall of the cabinet, and the radiating part can be with the institute of the cabinet State second sidewall contact setting.
Assuming that fluid introduction part is contacted with the first side wall, then the intracorporal heat of case reaches fluid by the first side wall and imports Portion supplies to the fluid temperature (F.T.) in the stage in air duct and rises, there is the possibility that can not play the effect as refrigerant.But it is logical The first side wall for crossing the portion of directing fluid into and cabinet is separately positioned, can be avoided the such unfavorable condition of generation, can make conduct The fluid that refrigerant plays a role is directed into heat delivery section.By making radiating part contact setting, energy with the second sidewall of cabinet Enough make the heat conveyed by heat delivery section, other than being discharged together with fluid from radiating part, moreover it is possible to reach metal case The second sidewall of body discharges to outside, therefore can be effectively discharged out heat.
It [8] in the case, can be with sandwiched slow between the fluid introduction part and the first side wall of the cabinet Rush material.It can easily make the first side wall of fluid introduction part and cabinet separately positioned.
[9] padded coaming preferably has heat insulating function.In this case, it is possible to constitute fender with heat-insulating material Material.It can prevent the intracorporal heat of case from reaching fluid introduction part by the first side wall.
[10] the fluid introduction part includes fluid supply unit, is supplied to from the stream that external fan is arranged in Body；Fluid guide, the fluid for being fed to the fluid supply unit are guided to the heat delivery section, in the stream The channeling direction of the fluid of body guide portion can be with are as follows: along with the supply of the fluid relative to the fluid supply unit Direction is the face of normal, and the direction of the roof towards the lid.Thereby, it is possible to make the fluid exported from fan successfully It is circulated to heat delivery section.
[11] in the case, the fluid supply unit has gas chamber, and the pipeline of the outlet of the gas chamber can be narrow with stenosis. Thereby, it is possible to make the pressure of gas fluid inside rise to certain and make its circulation, so as to certain flow rate, and not The flowing in pipeline can be made to glance off.
[12] in the present invention, in the temperature of the fluid of the radiating part, fluid relative to the fluid introduction part Temperature, preferably at+60 DEG C or less.More preferably at+40 DEG C or less.Temperature by reducing fluid introduction part and radiating part is inclined Tiltedly, temperature difference caused by the cooling between the monocell of box house can be reduced, so as to make monocell equably aging. In addition, burn when attended operation can be prevented due to fluid temperature (F.T.) and the basic indifference of room temperature to outside discharge.
[13] in the case, the width direction in the air duct can be the direction in parallel of the monocell, the air duct Length direction can be the series connection direction of the monocell.
[14] in the present invention, each pipe of the fluid introduction part, the heat delivery section and the radiating part The highly preferred of road is 10-30mm.If the pressure loss becomes larger less than 10mm.Therefore, in order to force it is cooling and by fan Deng be used as fluid drive apparatus mode in, need to make the driving capability of fan to become larger.This will lead to the size or driving of fan Power is got higher, and the energy density or system effectiveness as battery reduce, while also result in the great number of cost, therefore not preferably. If there are occurring in heat delivery section, convection current, the intracorporal heat of case is easily drained, heat-insulating property incurs loss more than 30mm It may.
[15] in addition, in the present invention it is possible to make the lid and the air duct integrated.As a result, and by lid and wind Road is compared as the case where individual part, and the two panels metal portion of lid and air duct lap can be made to become a piece of, it will Reduce the area (heat dissipation area) of the good metal part of heat conductivity.In addition, since number of components is reduced, the group of secondary cell Dress becomes easy, and can be realized the reduction in assembling working hour, the shortening of built-up time.
[16] in addition, in the present invention, the lid can have roof and eaves, to close the upper surface of the cabinet The mode of opening is arranged, and the fluid introduction part can be along the first side wall of the cabinet, and towards the institute of the lid It states and is arranged between eaves and the first side wall of the cabinet, the heat delivery section can be set on the top of the lid Between wall and the cabinet, and it is piped in the shape of a spiral from the center portion of the cabinet to peripheral portion, the heat dissipation Portion is set between the first side wall of the cabinet and the eaves of the lid along the first side wall of the cabinet It sets.
[17] alternatively, in the present invention, the lid can have roof and eaves, to close the upper surface of the cabinet The mode of opening is arranged, and the fluid introduction part has the through hole of the central portion for the roof for being formed in the lid, institute It states heat delivery section to be arranged between the roof of the lid and the cabinet, the heat that will at least generate in the cabinet It is conveyed together with the fluid imported by the through hole, the radiating part at least includes the first radiating part, from described It is arranged between the first side wall of cabinet and the eaves of the lid along the first side wall of the cabinet；And second heat dissipation Portion, between the eaves of the second sidewall and the lid opposite with the first side wall of the cabinet along the case The second sidewall of body is arranged.
[18] alternatively, in the present invention, the lid can have roof and eaves, to close the upper surface of the cabinet The mode of opening is arranged, and the fluid introduction part has the first through hole, and first through hole is formed in the institute of the lid The side wall of the side of eaves is stated, the heat delivery section is arranged between the roof of the lid and the cabinet, at least will The heat generated in the cabinet conveys together with the fluid imported by first through hole towards the radiating part, The radiating part has the second through hole, and second through hole is formed in and the side of the eaves of the lid The side wall of the opposite other side of side wall.
[19] in the present invention, comprising: heater is arranged in the cabinet；And heat-insulating material, it is arranged described Between air duct and the cabinet, and narrower than the opening area of the cabinet, the cabinet have the first side wall relative to each other with Second sidewall, the heat-insulating material can in the cabinet close to the first side wall be arranged, the first side wall be based on The introduction side of the fluid in the air duct.
If cooling fluid is supplied to air duct, since the temperature of fluid is lower, there are following situations: according to its temperature It is poor to spend, and more heat is pulled away, and in cabinet, the first side wall as fluid introduction side is cooled nearby, the intracorporal temperature of case Degree distribution deteriorates.In this case, it since heater is powered, carries out the importing of fluid and is powered to heater, therefore There are the possibility that system effectiveness reduces.
Therefore, exhausted by being arranged between air duct and cabinet in the case where making the introduction side of fluid close to the first side wall Hot material can reduce the temperature near the first side wall.As a result, even if during importing fluid, do not need to adding yet Hot device is powered, so as to inhibit system effectiveness to reduce, therefore more preferably.
Invention effect
Secondary cell according to the present invention, according to the height of load, without changing the heat insulating construction of thermally insulated container, Ji Kejin Row optimum operation.
Detailed description of the invention
In Fig. 1, Figure 1A is the longitudinal section view shown in a part for the structure of secondary cell for omitting present embodiment, Figure 1B Top view shown in when being the cabinet of secondary cell in terms of upper surface.
In Fig. 2, Fig. 2A is the longitudinal section view decomposed shown in the structure of the secondary cell of present embodiment, and Fig. 2 B is to show sky The main view of one structural example of gas introduction part.
Fig. 3 is to omit the circuit diagram being accommodated in shown in a part of the intracorporal assembled battery of case.
Fig. 4 is the perspective view for showing an example in air duct.
Fig. 5 is the block diagram for showing an example of cooling control unit and heater control unit.
Fig. 6 be from terms of the importing direction of air when lid, cabinet and air duct shown in longitudinal section view.
In Fig. 7, Fig. 7 A is the longitudinal section view omitted shown in a part of the secondary cell of first variation, and Fig. 7 B is from upper Top view shown in when cabinet and the air duct of first variation are seen in surface.
Fig. 8 is the longitudinal section view omitted shown in a part of the secondary cell of the second variation.
In Fig. 9, Fig. 9 A is the longitudinal section view omitted shown in a part of the secondary cell of third variation, and Fig. 9 B is from upper Top view shown in when the cabinet of secondary cell is seen on surface.
Figure 10 is in the 3rd variation, shown in a part for omitting the state for making heat-insulating material a part expose setting Longitudinal section view.
In Figure 11, Figure 11 A is in the 3rd variation, along third side wall and the 4th side in terms of the importing direction of air Longitudinal section view shown in when wall is respectively set the state of heat-insulating material, Figure 11 B is the secondary electricity of the third variation in terms of upper surface Top view shown in when the cabinet in pond.
In Figure 12, Figure 12 A is in the 3rd variation, to set respectively in terms of upper surface along the first side wall and second sidewall Top view shown in when setting the cabinet of heat-insulating material, Figure 12 B is in the 3rd variation, along the first side wall-in terms of upper surface Top view shown in when 4th side wall is respectively set the cabinet of heat-insulating material.
In Figure 13, Figure 13 A is the longitudinal section view omitted shown in a part of the secondary cell of the 4th variation, and Figure 13 B is Omit the longitudinal section view shown in a part of the secondary cell of 5th variation.
Specific embodiment
Hereinafter, A- Figure 13 B referring to Fig.1, to the embodiment example that secondary cell of the invention is suitable for such as NaS battery It is illustrated.
As shown in Figure 1A-Fig. 2 B, the secondary cell 10 of present embodiment has the pedestal 12 being for example made of steel, mounting The cabinet 14 that is fixed on the pedestal 12, be accommodated in cabinet 14 include multiple monocells 16 assembled battery 18 and fully sheathed case The lid 20 of the opening of body 14.Monocell 16 for example with cylindrical shape, is accommodated in cabinet 14 axially towards vertical direction.
In addition, being respectively arranged in the bottom surface of cabinet 14 and inner wall makes what is used when the rising of the temperature in cabinet 14 to add Hot device 22.Moreover, silica sand 24 is filled in case in order to cope with the damage of monocell 16, abnormal heating or active material leakage etc. Gap between body 14 and assembled battery 18.
Cabinet 14 has for example close to the shape of cuboid, has four side walls and bottom wall, upper surface opening.Cabinet 14 It is made of the plate being for example made of stainless steel, itself is formed to have the box-like of hollow portion 26.Hollow portion 26 is airtight close The confined space of envelope, the structure that be connected to hollow portion 26 can with exterior space by vacuum valve (not shown).It is filled in hollow portion 26 The vacuum heat-insulation plate 28 for making glass fibre be solidified into plate-like porous using binder is filled out, so that cabinet 14 be made to become vacuum insulation Structure.
Lid 20 has roof 30 and eaves 32, and is arranged in a manner of the opening of the upper surface of closed box 14.With it is above-mentioned In the same manner, lid 20 is made of cabinet 14 plate being for example made of stainless steel, itself is formed to have the case of hollow portion 34 Shape.Hollow portion 34 is hermetically sealed confined space, and by vacuum valve (not shown), forming hollow portion 34 can connect with exterior space Logical structure.The porous vacuum heat-insulation plate 36 for making glass fibre be solidified into plate using binder is loaded in hollow portion 34, Lid 20 is set to become vacuum insulation structure.
On the other hand, as shown in figure 3, assembled battery 18 is by from positive external terminal 38 towards negative outer terminal 40 More than two chunkings 42 are connected in series and constitute.Each chunking 42 be pass through be connected in series by more than two monocells 16 two A above circuit (circuit string 44) is connected in parallel and constitutes.Positive external terminal 38 is outside via the first side wall 46a of cabinet 14 Portion is prominent, and negative outer terminal 40 is prominent to outside via the second sidewall 46b (side wall opposite with the first side wall 46a) of cabinet 14 Out.That is, the series connection direction of monocell 16 is the direction from the first side wall 46a towards second sidewall 46b, the parallel connection side of monocell 16 To be from third side wall 46c towards the 4th side wall 46d (side wall opposite with third side wall 46c) direction.
The details of above-mentioned heater 22 is to include bottom surface heater 22x, is arranged at the bottom of cabinet 14 Face；First side heater 22a, is arranged in the inner wall of the first side wall 46a；Second side heater 22b, setting exist The inner wall of second sidewall 46b.Certainly, the inner wall of the inner wall of third side wall 46c and the 4th side wall 46d can also be distinguished It is arranged side heater (third side heater 22c and the 4th side heater 22d).
In order to measure the temperature in cabinet 14, the bottom surface of cabinet 14 center and by the heater 22x of bottom surface in example As the position of 3mm-15mm is provided with bottom surface temperature sensor 102a (being indicated in Figure 1A and Figure 1B with white circle).In addition, The inner wall of the first side wall 46a lateral center and be it is longitudinally central, apart from first side heater 22a for example The position of 3mm-15mm is provided with side temperature sensor 102b (being indicated in Figure 1A and Figure 1B with black circle).Certainly, side Face temperature sensor 102b also can be set the lateral center in the inner wall of second sidewall 46b and be longitudinally central, distance The position of second side heater 22b such as 3mm-15mm.
Also, as shown in Figure 1A-Fig. 2 B, secondary cell 10 includes metal air duct 50, is arranged at cabinet 14 Between lid 20, air 48 circulates inside it；Board member 52 is arranged between assembled battery 18 and air duct 50, at least With electrical insulating property；The outside of cabinet 14 is arranged in fan 54, flows air 48 to air duct 50；Cooling control unit 56, Drive control fan 54；And heater control unit 57 (referring to Fig. 5), power control is carried out to heater 22.That is, in this implementation In mode, becomes air duct 50 and be arranged below lid 20, and be provided with silica sand 24 between air duct 50 and assembled battery 18 Mode.In addition, in the present embodiment, nitrogen in addition also can be used using air 48 as the fluid to circulate in air duct 50 The gases such as gas, helium.Fan 54 is at secondary cell 10 more than one, it is contemplated that and redundancy when failure can be set more, It can be connect with driving circuit.
Air duct 50 includes metal air introduction part 58 (fluid introduction part), is imported into air 48；Metal heat Measure delivery section 60, air introduction part 58 downstream side and be arranged between lid 20 and cabinet 14, at least will be in cabinet 14 The heat of generation conveys together with air 48；And metal radiating part 62, the downstream side of heat delivery section 60 is set, it will Heat is discharged outward together with air 48.
Air introduction part 58 along cabinet 14 the first side wall 46a, and towards the of the eaves of lid 20 32 and cabinet 14 It is arranged between one side wall 46a.The sandwiched padded coaming 64 especially between air introduction part 58 and the first side wall 46a of cabinet 14 (heat-insulating material), air introduction part 58 and the first side wall 46a of cabinet 14 are separately positioned.As padded coaming 64 preferably have every Heat function.Heat-insulating material has been used in the present embodiment.
The air introduction part 58 includes air supply unit 66 (fluid supply unit), is supplied to from setting in outside Fan 54 air 48；And air guide part 68 (fluid guide), it is connected to air supply unit 66, is fed to sky The air 48 of gas supply unit 66 is guided to heat delivery section 60.The channeling direction of air 48 in air guide part 68 are as follows: along Using the direction of the supply of the air 48 relative to air supply unit 66 as the face 69 of normal, and towards the side of the roof of lid 20 30 To.
Air supply unit 66 has gas chamber 70, as shown in figure 4, for the pipeline 71 of the gas chamber 70, with the master of air 48 Direction is that the shape in the section 72 of normal direction is rectangle, also, is had towards air guide part 68, the area in section 72 The shape that (especially cross sectional shape, that is, rectangular long side 73) becomes larger.The pipeline 74 of air guide part 68 has following shape Shape: being rectangle by the shape in the section 75 of normal direction of the principal direction of air 48, also, towards heat delivery section 60, cuts The area in face 75 is constant.Herein, pipeline refers to the space (space surrounded by inner wall) that air 48 flows, also identical below. The height hb of the pipeline 74 of the height ha (length of short side 76) and air guide part 68 of the pipeline 71 of gas chamber 70 be (short side 77 Length) it is 10-30mm, especially, in the height hb of the pipeline 74 of the height ha > air guide part 68 of the pipeline 71 of gas chamber 70 Relationship.
On the other hand, as shown in Figure 1A, heat delivery section 60 is arranged between the roof 30 of lid 20 and cabinet 14.Heat The shape of the lower surface 60a of delivery section 60 is identical as the opening shape of cabinet 14, be rectangle, the size of lower surface 60a with The openings of sizes of cabinet 14 is roughly the same.In addition, heat delivery section 60 lower surface 60a (with (or the plate structure of assembled battery 18 Part 52) opposite face) it is provided with the multiple fins 78 extended towards assembled battery 18 (or board member 52).
As fin 78, can enumerate such as plate shaped fin, waveform fin, sheet fin.Also, by multiple fins 78 when being arranged in the lower surface 60a of heat delivery section 60, can enumerate: for example, by the width direction of heat delivery section 60 (single electricity The direction in parallel in pond 16) multiple plate shaped fins for extending or waveform fin be arranged in heat delivery section 60 length direction it is (single The series connection direction of battery 16), or on the contrary, by extending in the length direction of heat delivery section 60 (the series connection direction of monocell 16) Multiple plate shaped fins or waveform fin be arranged in the width direction (direction in parallel of monocell 16) of heat delivery section 60.Separately It outside, can also be (single by the width direction of the direction of the plate face of each sheet fin and heat delivery section 60 when multiple sheet fins are set The direction in parallel of battery 16) match, it is arranged in the length direction (the series connection direction of monocell 16) of heat delivery section 60, on the contrary It can also.It is of course also possible to set the direction of plate face at random to arrange.Heat delivery section 60 width direction (monocell 16 Direction in parallel) arrangement fin 78 when, the monocell number s of the number of permutations of fin 78 relative to the series connection direction of monocell 16, according to 1/1-1/4 times of the range of each s is arranged.
As shown in figure 4, the pipeline 80 of heat delivery section 60 has following shape: using the principal direction of air 48 as normal direction The shape in section 82 be rectangle, also, towards radiating part 62, the area in section 82 is constant.The pipeline of heat delivery section 60 80 height hc (length of short side 83) is identical as above-mentioned air guide part 68, is 10-30mm.
In addition, as shown in Figure 2 B, in the pipeline 80 of heat delivery section 60, being provided with the shape for maintaining pipeline 80 Multiple support portions 84.As support portion 84, can be used writing board shape, waveform shape, sheet component.Multiple support portions 84 are set It when setting in the pipeline 80 of heat delivery section 60, can enumerate: for example, by the length direction of heat delivery section 60 (monocell 16 Series connection direction) extend multiple tabulars or waveform shape arrangement of parts heat delivery section 60 width direction (monocell 16 direction in parallel).In addition, can be enumerated when the component of multiple sheets is arranged: by the board direction and heat of the component of each sheet The length direction (the series connection direction of monocell 16) of delivery section 60 matches, in the width direction (monocell of heat delivery section 60 16 direction in parallel) it is arranged.Certainly, board direction can also be set at random to arrange.In addition, as support portion 84, it can also It is preferable to use such as L-shaped metal-wares or U-shaped metal-ware etc..In the width direction (monocell 16 of heat delivery section 60 Direction in parallel) arrangement support portion 84 when, the number of permutations of support portion 84 is to arrange according to each 200-1000mm.
As shown in Figure 1A and Fig. 2A, the edge between the second sidewall 46b of cabinet 14 and the eaves 32 of lid 20 of radiating part 62 Cabinet 14 second sidewall 46b setting, especially contact setting with the second sidewall 46b of cabinet 14.As shown in figure 4, heat dissipation The pipeline 86 in portion 62 has following shape: it is rectangle by the shape in the section 88 of normal direction of the principal direction of air 48, and And towards downstream side, the area in section 88 is constant.The height hd (length of short side 90) of the pipeline 86 of radiating part 62 is 10- 30mm.For radiating part 62, overall length is length identical with the height of eaves 32 of lid 20.In addition, it also may be preferable for use The length is 0mm.
As shown in figure 5, cooling control unit 56 has fan driving judegment part 94 and fan drive circuit 96.Heater control There is bottom surface heater-driven judegment part 104, bottom surface heater drive circuit 106, side heater to drive judegment part in portion 57 108 and side heater driving circuit 110.
The temperature Di detected by bottom surface temperature sensor 102a be preset upper limit threshold temperature Dth1 (such as 330-340 DEG C) more than stage, fan drive judegment part 94 to fan drive circuit 96 export enabling signal Sd, in temperature Di For the lower threshold temperature Dth2 stage below, stop signal Ss is exported to fan drive circuit 96.96 base of fan drive circuit In the input driving fan 54 of enabling signal Sd, air 48 is supplied to air duct 50, the input based on stop signal Ss makes fan 54 stop, and stop supplying air 48 to air duct 50.
The temperature Di detected by bottom surface temperature sensor 102a be preset lower threshold temperature Dth3 (such as 300 DEG C) stage below, bottom surface heater-driven judegment part 104 to bottom surface heater drive circuit 106 export enabling signal Sbd is more than the stage of lower threshold temperature Dth3 in temperature Di, exports stop signal to bottom surface heater drive circuit 106 Sbs.Input of the bottom surface heater drive circuit 106 based on enabling signal Sbd is powered to bottom surface heater 22x, based on stopping letter The input of number Sbs stops being powered to bottom surface heater 22x.
The temperature Dk detected by side temperature sensor 102b be preset lower threshold temperature Dth3 (such as 300 DEG C) stage below, side heater drive judegment part 108 to side heater driving circuit 110 export enabling signal Std is more than the stage of lower threshold temperature Dth3 in temperature Dk, exports stop signal to side heater driving circuit 110 Sts.Input of the side heater driving circuit 110 based on enabling signal Std adds to the 4th side first side heater 22a- Hot device 22d is powered, and the input based on stop signal Sts stops logical to the 4th side heater 22d of first side heater 22a- Electricity.
Certainly, it also may be preferable for use control method below.
That is, the control method are as follows: in the secondary cell 10 and air duct 50 for being provided with air duct 50, carry out to air 48 carry out with The necessary matched control of heat dissipation capacity.As the control method, following the-the four control method of first control method can be enumerated.
First control method are as follows: by the internal temperature values of secondary cell 10, air quantity is reduced when temperature is low, when temperature is got higher Increase air quantity etc., heat dissipation capacity is controlled by temperature to enable, air quantity adjusting is carried out by the revolving speed change of fan or passes through The ON/OFF duty ratio of the driving time of fan carries out average air quantity and adjusts to be controlled.
Second control method are as follows: the discharge wave to the battery calculated according to the load change or power generation variation predicted in advance Shape is predicted, when electric discharge output is high or the time is long, is increased air quantity etc., is predicted necessary heat dissipation capacity, pass through fan Revolving speed change carries out air quantity adjusting or carries out average air quantity by the ON/OFF duty ratio of the driving time of fan and adjust to carry out Control.
Third control method and the 4th control method below are that the resistance aging to secondary cell 10 carries out pre- observing and controlling The method of system.
That is, third control method are as follows: from voltage value, the current value when operating, by the electricity for being calculated by secondary cell 10 Resistance value calculates internal calorific power, predicts necessary heat dissipation capacity according to the discharge waveform predicted in advance, passes through turning for fan Speed change carries out air quantity adjusting or carries out average air quantity by the ON/OFF duty ratio of the driving time of fan and adjust to be controlled System.
4th control method are as follows: from temperature when operating and operation cycle the resistance value of secondary cell 10 is carried out pre- It surveys, according to the discharge waveform predicted in advance, calculates internal calorific power, necessary heat dissipation capacity is predicted, the revolving speed of fan is passed through Change carries out air quantity adjusting or carries out average air quantity by the ON/OFF duty ratio of the driving time of fan and adjust to be controlled System.
Then, the effect of secondary cell 10 is illustrated.Firstly, the load of the electric system such as spring or autumn is lower When, or when the power generation such as wind-power electricity generation changes equalization, since discharge time is shorter, previous, there are NaS batteries Calorific value is lower than the case where heat loss of thermally insulated container.In the case, as described above, there are efficiency for charge-discharge reduce can Energy.But in the secondary cell 10, due to being set along cabinet 14 and lid 20 for vacuum insulation structure, energy Enough utilize the accumulation of heat in cabinet 14, even with heater power, less power, so as to inhibit charge and discharge to imitate Rate reduces.
On the other hand, when the load of the electric system such as summer or winter is higher, due to electric discharge export the higher or time compared with It is long, therefore there are the possibility that the calorific value of NaS battery is more than the heat loss of secondary cell 10.Especially in the secondary battery 10, Due to being set along cabinet 14 and lid 20 for vacuum insulation structure, there are the accumulation of heats in cabinet 14 to lead to cabinet 14 The possibility that excessively rises of internal temperature.But in the secondary cell 10, the temperature in cabinet 14 is upper limit threshold temperature The stage of Dth1 or more, cooling 56 driving fan 54 of control unit, the air 48 of the cooling generated as a result, with the driving of fan 54 It is supplied to air duct 50.By being supplied to air 48 in air duct 50, the heat in cabinet 14 is moved by heat delivery section 60 It moves to air 48, air 48 can be by high temperature.The air 48 of high temperature is discharged by radiating part 62 to outside cabinet 14.That is, cabinet It is radiated in 14.It is forced to cool down in cabinet 14 as a result, even if cabinet 14 and lid 20 are the higher knot of thermal insulation Structure also can be cooled down effectively in cabinet 14.As a result, can also make cabinet even if the electric discharge output higher or time is longer Temperature in 14 maintains substantially 300-360 DEG C of temperature range, and the combination electricity in cabinet 14 can be made under best effort environment Pond 18 operates.
Relative to the temperature of the air 48 in air introduction part 58, the temperature of the air 48 in radiating part 62 is preferably+60 DEG C hereinafter, be more preferably+40 DEG C or less.It, can be by single electricity by reducing the temperature dip of air introduction part 58 and radiating part 62 The temperature difference of the horizontal direction (series connection direction) in pond 16 be arranged at 15 DEG C hereinafter, can reduce it is cooling caused by monocell 16 it Between temperature difference, so as to effectively play the performance as assembled battery 18, while the aging of monocell 16 can be made Become uniform.In addition, the temperature to the air of outside discharge is roughly the same with room temperature, therefore burning when can prevent attended operation Wound.
In particular, there is electrical isolation due to being at least arranged between the heat delivery section 60 in assembled battery 18 and air duct 50 The board member 52 of property, therefore can prevent metal air duct 50 from contacting with assembled battery 18, so as to avoid monocell 16 Between short circuit.
In the present embodiment, air duct 50 is arranged below lid 20, is provided between air duct 50 and monocell 16 Silica sand 24.In the case, the coefficient of heat conduction of silica sand 24 is smaller.Therefore, the temperature of the air 48 in air duct 50 is due to height The heat transfer in direction is mitigated before reaching assembled battery 18, so as to make the height of the monocell 16 in assembled battery 18 The temperature for spending direction is more uniform.
In addition, taking setting this thermal insulation layer of silica sand 24 as described above between air duct 50 and the top of monocell 16 Mode, when being cooled down by the circulation of the air 48 into air duct 50, can make the temperature difference up and down of monocell 16 ± 15℃.The thermal resistance of the equal thermal insulation layers of silica sand 24 at this time is expressed as R1, when the thermal resistance of monocell 16 is expressed as R2, the ratio of thermal resistance It (R1/R2) is R1/R2 > 8.
Since the lower surface 60a setting of the heat delivery section 60 in air duct 50 extends towards assembled battery 18 (board member 52) Multiple fins 78, therefore even if between cabinet 14 and lid 20 be filled with silica sand 24, can also improve from assembled battery 18 to The heat transfer in air duct 50, and the temperature in cabinet 14 can effectively be made to reduce.
In addition, using air duct 50 and silica sand 24, it is contemplated that due to the vibration such as transport or earthquake, it may occur that the upper table of silica sand 24 Face becomes concave-convex, and face contact becomes non-uniform situation.But by multiple fins 78 can make heat transfer in cabinet 14 Become to homogenize in horizontal direction, and can make temperature difference between the monocell 16 inside assembled battery 18 ± 15 DEG C with It is interior.As a result, it is possible to reduce temperature difference caused by the cooling between internal monocell 16, so as to make as combination electricity The performance of each monocell 16 in pond 18 gives full play of.This can be related to the aging for inhibiting monocell 16.
Air duct 50 includes metal air introduction part 58, is imported into air 48；Metal heat delivery section 60, Its downstream side that air introduction part 58 is set, and be arranged between lid 20 and cabinet 14, it will at least be generated in cabinet 14 Heat conveyed together with air 48；And metal radiating part 62, the downstream side of the heat delivery section 60 is set, it will be hot Amount is discharged outward together with air 48.In the case, the air of heat delivery section 60 is directed by air introduction part 58 48 circulate between cabinet 14 and lid 20.Typically, upward (lid 20) due to the heat of the generation of assembled battery 18 It propagates, therefore the heat propagated upwards downstream conveys together with the air 48 flowed in air duct 50, via radiating part 62 It is discharged to outside cabinet 14.
In addition, along the first side wall 46a of cabinet 14, and towards the first side wall of the eaves of lid 20 32 and cabinet 14 Air introduction part 58 is set between 46a, heat delivery section 60 is set between the roof 30 and cabinet 14 of lid 20, from cabinet 14 Second sidewall 46b and lid 20 eaves 32 between along the second sidewall 46b of cabinet 14, radiating part 62 is set, therefore at the same time Between cabinet 14 and lid 20 with vacuum insulation structure, it can be easy to set up air duct 50, and can be by combination electricity Heat delivery section 60 is arranged in the part for the calorie spread that pond 18 generates.
In the case, it directs the air into portion 58 and the first side wall 46a of cabinet 14 is separately positioned.If if air is led Enter portion 58 to contact with the first side wall 46a, then exists and as follows may, that is, the heat in cabinet 14 is transferred to by the first side wall 46a Air introduction part 58, supplying to the temperature of the air 48 in the stage in air duct 50 can rise, and can not play the function as refrigerant. But it is separately positioned by directing the air into portion 58 and the first side wall 46a of cabinet 14, it can be avoided this unfavorable condition, energy The air 48 to play a role as refrigerant is enough set to import heat delivery section 60.In particular, by making 64 (heat insulating material of padded coaming Material) be interposed between air introduction part 58 and the first side wall 46a of cabinet 14, can direct the air into portion 58 easily with cabinet 14 the first side wall 46a is separately positioned.Moreover, because radiating part 62 is contacted setting with the second sidewall 46b of cabinet 14, therefore The heat conveyed by heat delivery section 60 also will be transmitted to metal other than being discharged together from radiating part 62 and air 48 The second sidewall 46b of the cabinet 14 of system is discharged to outside, therefore can be effectively discharged out heat.
In addition, air introduction part 58 is constituted as follows, that is, include air supply unit 66 (gas chamber 70), be supplied to From the air 48 that external fan 54 is arranged in；And air guide part 68, it is fed to the air 48 of air supply unit 66 Guidance is to heat delivery section 60, and the channeling direction due to directing the air to the air 48 in portion 68 is set as following direction, that is, edge Using the direction of the supply of the air 48 relative to air supply unit 66 as the face 69 of normal, and towards the roof of lid 20 30 Direction, therefore the air 48 exported from fan 54 can be made successfully to be circulated to heat delivery section 60.
It, can will be from particular, the pipeline of the outlet (and entrance of air guide part 68) by making gas chamber 70 narrows The air 48 that fan 54 exports accumulates in gas chamber 70, rises to pressure centainly, and is discharged from outlet.
In addition, the pipeline 80 due to heat delivery section 60 has following shape: using the principal direction of air 48 as normal direction The shape in section 82 be rectangle, and towards radiating part 62, the area in section 82 is constant, therefore can make in gas chamber 70 Pressure, which rises to, centainly to be made the air 48 of supply not occur to flow deflection and is circulated with certain flow rate towards radiating part 62.Together Sample, since the pipeline 86 of radiating part 62 has following shape: using the principal direction of air 48 as the shape in the section 88 of normal direction Shape is rectangle, and towards downstream side, the area in section 88 is constant, therefore can make pressure centainly sends out the air of supply not It is raw to flow deflection and circulated outside with certain flow rate towards air duct 50.In addition, air guide part 68 is more defeated than heat with radiating part 62 Send portion 60 towards downside.When fan 54 does not drive as a result, the movement of heat caused by the free convection of air is inhibited, can Maintain the high thermal insulation of secondary cell 10.
Moreover, as shown in figure 3, in the secondary cell 10, for assembled battery 18, multiple monocells 16 are along air 48 principal direction is connected in series.Herein, close if one chunking 42 of concern, is constituted among multiple circuit strings 44 of chunking 42 The monocell 16 of the first side wall 46a is cooled down well, and the cooling degree of the monocell 16 far from the first side wall 46a is lower. Due to this cooling degree difference constitute a chunking 42 multiple circuit strings 44 in identical, all circuit strings 44 By charge and discharge come using basically will not produce deviation in characteristic or degree of aging etc..Therefore, the case where air duct 50 are set Under, preferably using the width direction in air duct 50 as the direction in parallel of monocell 16, by the length direction (master of air 48 in air duct 50 Direction) as monocell 16 series connection direction be arranged.
In addition, in the secondary battery 10, each pipeline for directing the air to portion 68, heat delivery section 60 and radiating part 62 is high Degree hb, hc and hd are set as 10-30mm.This is because, then the pressure loss becomes larger if it is less than 10mm, need to make fan 54 driving capability becomes larger.This will lead to the size of fan 54 or driving power is got higher, the energy density or system as battery Efficiency reduces, while also result in the great number of cost, therefore not preferably.If can be generated in heat delivery section 60 more than 30mm Convection current is easy to radiate out of cabinet 14, and heat-insulating property reduces.Therefore, air guide part 68, heat delivery section 60 and radiating part 62 each pipeline height hb, hc and hd is preferably 10-30mm.
However, for the heat delivery section 60 being arranged in horizontal direction, since the center portion of pipeline 80 is flexible, and And due to the weight of the lid 20 with vacuum insulation structure, the height hc of above-mentioned pipeline 80 can not be maintained by existing The case where 10-30mm.It is therefore preferable that multiple support portions 84 are arranged in the pipeline 80 of heat delivery section 60.Thereby, it is possible to make heat The entirety for measuring the pipeline 80 of delivery section 60 maintains 10-30mm, also, can also support lid 20 by heat delivery section 60.? In this case, for example by the way that the support portion 84 in heat delivery section 60 to be arranged along the series connection direction of monocell 16, by heat The fin 78 of the lower surface 60a of delivery section 60 is arranged along the direction in parallel of monocell 16, can pass through support portion 84 and fin 78 support heat delivery section 60 with cross, so that improves air duct 50 prevents thermal deformation effect.
In addition, the number of permutations of fin 78, the monocell number s in the series connection direction relative to monocell 16, preferably according to each s 1/1-1/4 times of range arranged.It is cooling between the monocell 16 inside assembled battery 18 when the negligible amounts of fin 78 Degree has differences.As a result, the temperature difference between monocell 16 becomes larger, it is unable to fully obtain the electrical property of each monocell 16 Can, it will lead to the aging of a part of monocell 16.On the other hand, if the quantity of fin 78 is excessive, more material is needed Material, while working hour increase is assembled, therefore not preferably.
In addition, the number of permutations of the support portion 84 of heat delivery section 60 is preferably to be arranged every 200-1000mm.Heat The height hc of delivery section 60 is preferably 10-30mm.Since the inside of cabinet 14 makes for a long time at a high temperature of 300-360 DEG C of temperature With if therefore consideration thermal deformation or thermal expansion, the more situation of support portion 84 are preferably, if but the quantity of support portion 84 Excessively, then more material is needed, while assembling working hour increase, therefore not preferably.On the other hand, relative to thermal deformation, from heat From the point of view of the permissible height variation for measuring the height hc of delivery section 60, preferred 20 times or more of height.
In addition, as shown in fig. 6, preferably making the pipeline of the flowing of air 48 among at least heat delivery section 60 in air duct 50 80 transverse width Wa (length in the direction in parallel of monocell 16) is shorter than the overall width in the direction in parallel of monocell 16, and 1-2 column are big It is small.In the case, in heat delivery section 60, in terms of the importing direction of air the left and right sides (with third side wall 46c and 4th side wall 46d close part), the partition 112 along the circulating direction of air is respectively set.Thereby, it is possible to make pipeline 80 Transverse width Wa 1-2 column size shorter than the overall width in the direction in parallel of monocell 16.Herein, by the pipe in heat delivery section 60 When the transverse width Wa on road 80 is set as identical as the overall width in direction in parallel of monocell 16, pass through the side from cabinet 14 The heat dissipation of (third side wall 46c and the 4th side wall 46d) and carried out heat dissipation of circulating from air 48 to air duct 50, exist Monocell 16 close to the side of cabinet 14 is cooled down than the monocell arranged in center portion by stronger, thus assembled battery The temperature in the direction in parallel of the monocell 16 in 18 becomes non-uniform possibility.Therefore, as described above, making at least hot of air duct 50 The transverse width Wa (length in the direction in parallel of monocell 16) of the pipeline 80 in delivery section 60 is measured than the parallel connection side of monocell 16 To the short 1-2 column size of overall width.In more detail, so that the transverse width Wa of pipeline 80 is shortened for air duct 50 monocell 16 Direction two sides in parallel do not reach the degree of the side (third side wall 46c and the 4th side wall 46d) of cabinet 14.As a result, close to case The monocell 16 of the side of body 14 not will receive strong cooling, can make the temperature in the direction in parallel of the monocell 16 in assembled battery 18 Degree becomes uniform.
Additionally, it is preferred that making the transverse width Wb of the entrance from the air introduction part 58 in air duct 50 to heat delivery section 60 (length in the direction in parallel of monocell 16: referring to Fig. 4) 1-2 column size shorter than the overall width in the direction in parallel of monocell 16, make Transverse width Wc (referring to Fig. 4) from the near exit of heat delivery section 60 to radiating part 62 is than the direction in parallel of monocell 16 The short 0-1 column size of overall width.Can make the temperature in the series connection direction of the monocell 16 in assembled battery 18 as a result, becomes uniform.
Then, several variations of the secondary cell 10 of present embodiment are illustrated referring to Fig. 7 A- Figure 13 B.
Firstly, as shown in Figure 7A and 7B, the secondary cell 10a of first variation has big with above-mentioned secondary cell 10 Identical structure is caused, it is different in the following areas.
That is, heat delivery section 60 is arranged between the roof 30 of lid 20 and cabinet 14, also, as shown in Figure 7 B, from case The center portion of body 14 is piped to peripheral portion in vortex-like.The cross sectional shape of pipeline can be circle, be also possible to four sides Shape etc..Heat delivery section 60 is between the first side wall 46a of cabinet 14 and the eaves 32 of lid 20, along the first side wall of cabinet 14 46a setting.
By setting vortex-like for the pipeline of heat delivery section 60, length of pipe is set to become larger, such as use a fan 54 When carrying out forcing cooling to multiple monocells 16, between multiple monocells 16, even if there are some differences, air for piping length Resistance can be supplied uniformly across air to monocell 16 also without very big difference.In addition, passing through the module central to high temperature Cryogenic air is directly fed, can be cooled down to emphasis, the temperature of cabinet 14 is made to become uniform.
Then, as shown in figure 8, the secondary cell 10b of the second variation is with roughly the same with above-mentioned secondary cell 10 Structure is different in the following areas.
It is constituted that is, lid 20 is integrated with air duct 50.In fig. 8 it is shown that passing through the assembling of hollow portion 34 in lid 20 Air duct 50 carries out integrated example.The contact portion in lid 20 and air duct 50 be it is hermetically sealed, thus the vacuum of lid 20 Heat insulating construction is maintained.As the contact portion of lid 20 and air duct 50, the sky of such as lid 20 and air duct 50 can be enumerated The radiating part 62 of gas guide part 68, lid 20 and the fin 78 in air duct 50, lid 20 and air duct 50.As integrated method, In addition can enumerate welding or with stud connect the methods of.
By keeping lid 20 integrated with air duct 50, with phase the case where regarding lid 20 and air duct 50 as individual part Than that the two panels metal portion of lid 20 and the lap in air duct 50 can be made to become a piece of, it will reduce the good gold of heat conductivity Belong to the area (heat dissipation area) of part, so as to improve the thermal efficiency.In addition, due to reducing number of components, secondary electricity The assembling of pond 10b becomes easy, and can be realized the reduction in assembling working hour, the shortening of built-up time.
Then, as shown in Figure 9A and 9B, the secondary cell 10c of third variation has big with above-mentioned secondary cell 10 Identical structure is caused, but has 114 aspect of heat-insulating material being arranged between cabinet 14 and lid 20 different.
Heat-insulating material 114 is arranged among cabinet 14 close to the first side wall 46a as fluid introduction side.In figure 9 a, It is provided with heat-insulating material 114 between silica sand 24 and air duct 50, particularly illustrates the example for being embedded to heat-insulating material 114 in silica sand 24 Son.Certainly, as shown in Figure 10, a part of heat-insulating material 114 can also be embedded in silica sand 24.
Herein, it is illustrated referring to size of Fig. 9 B to heat-insulating material 114.Firstly, will be from the third side wall 46c of cabinet 14 The distance between the lateral surface of lateral surface to the 4th side wall 46d be expressed as La, will be from the medial surface of third side wall 46c to the 4th The distance between the medial surface of side wall 46d is expressed as Lb.By from the slave third side wall 46c of heat-insulating material 114 along the 4th side wall 46d (distance that the direction y) in parallel of monocell 16 extends is expressed as Lc, will be from the slave the first side wall 46a of heat-insulating material 114 in direction Along the direction of second sidewall 46b, (distance that the series connection direction x) of monocell 16 extends is expressed as Ld.In addition, will be from cabinet 14 The distance between the medial surface of the medial surface of the first side wall 46a to second sidewall 46b are expressed as Le.
At this point, having following size relation.
Lc >=La, or
Lb < Lc < La, or
Lc≤Lb
Ld < Le/2.
The part of not set heat-insulating material 114 is formed with gap 116.Thus, for example being placed in silica sand in heat-insulating material 114 Content such as silicon in the case that situation or a part on 24 are embedded in silica sand 24, by gap 116, in cabinet 14 Sand 24 etc. expose, as described above, can be improved by the fin 78 in air duct 50 from assembled battery 18 to the heat transfer in air duct 50.
In addition, heat-insulating material 114 can also be positioned in the upper surface of cabinet 14, the upper surface of cabinet 14 can not also be positioned in. In addition, the constituent material as heat-insulating material 114, can enumerate ceramic fibre etc..
However, if along with fan 54 driving, cold air 48 is supplied to air duct 50, then due to the temperature of air 48 compared with Low, according to its temperature difference, more heat is pulled away, in cabinet 14, as quilt near the first side wall 46a of fluid introduction side It is cooling.As a result, being preset lower threshold temperature by the temperature Dk that side temperature sensor 102b is detected typically Dth3 (such as 300 DEG C) are spent hereinafter, the 4th side heater 22d of first side heater 22a- is energized.In the case, by In carrying out driving to fan 54 by fan drive circuit 96 and added to first side by side heater driving circuit 110 Hot the 4th side heater 22d of device 22a- is powered, therefore there are the possibility that system effectiveness reduces.
Therefore, by the way that heat-insulating material 114, the temperature of the lateral surface of the first side wall 46a are arranged between cabinet 14 and lid 20 Degree is difficult to be transferred to inside cabinet 14.As a result, even if in the process driven by fan drive circuit 96 to fan 54 In, it also can be avoided the 4th side heater 22d of first side heater 22a- energization.As a result, due to being able to suppress system effect The reduction of rate, therefore be more preferred.
In addition, as shown in fig. 6, flowing air 48 by partition 112 among at least heat delivery section 60 in air duct 50 In the case where the transverse width Wa of dynamic pipeline 80 1-2 column size shorter than the overall width in the direction in parallel of monocell 16, due to than Partition 112 does not circulate close to 117 air 48 of the space of exterior portion, therefore typically, and heat substantially will not be by 48 band of air It walks.But in the case where constituting air duct 50 by the higher material of the coefficients of heat conduction such as metal, there are temperature caused by air 48 Degree reduces, via composition ratio partition 112 close to the metal portion of the part in outside, the possibility being transferred to inside cabinet 14.In this feelings Under condition, thermal balance deteriorates, and system effectiveness reduces.
Therefore, as shown in Figure 11 A and Figure 11 B, on the basis of above-mentioned heat-insulating material 114 (1B referring to Fig.1), preferred edge Third side wall 46c configure heat-insulating material 114a, along the 4th side wall 46d configure heat-insulating material 114b.Thereby, it is possible to prevent sky The reduction of temperature caused by gas 48 is transferred to the feelings inside cabinet 14 via composition ratio partition 112 close to the metal portion of exterior portion Condition, therefore it is able to suppress thermal balance deterioration.
In addition, making one timing of flow velocity of the air 48 flowed in air duct 50, from the medial surface of the first side wall 46a of cabinet 14 The distance between medial surface to second sidewall 46b Le (referring to Fig. 9 B and Figure 12 A) is transferred to air 48 if shorter Heat tails off, and in the state that the temperature of air 48 is lower, will reach the radiating part 62 of the side second sidewall 46b.Therefore, in cabinet In 14, the second sidewall 46b of fluid outlet side is cooled nearby, and thermal balance deteriorates, and efficiency reduces.Therefore, as illustrated in fig. 12, On the basis of above-mentioned heat-insulating material 114, heat-insulating material 114c is configured preferably along second sidewall 46b.Even if as a result, it is above-mentioned away from Shorter from Le, temperature caused by air 48 reduces the inside for being also difficult to be transferred to cabinet 14, therefore is able to suppress thermal balance deterioration.
It certainly, as shown in Figure 12 B, can also be along third side wall 46c, the 4th on the basis of above-mentioned heat-insulating material 114 Side wall 46d and second sidewall 46b configures heat-insulating material 114a, 114b and 114c.Although the number for the heat-insulating material 114 being arranged Amount increases, but is effective in terms of inhibiting thermal balance deterioration.
Then, as shown in FIG. 13A, the secondary cell 10d of the 4th variation has roughly the same with above-mentioned secondary cell 10 Structure, it is different in the following areas.
That is, air introduction part 58 has the through hole 120 of the central portion for the roof 30 for being formed in lid 20.Heat delivery section 60 are arranged between the roof 30 of lid 20 and cabinet 14, at least lead the heat generated in cabinet 14 with by through hole 120 The air 48 entered is conveyed towards radiating part 62 together.Radiating part 62 at least includes the first radiating part 62A, from the of cabinet 14 It is arranged between one side wall 46a and the eaves 32 of lid 20 along the first side wall 46a of cabinet 14；And the second radiating part 62B, from It is arranged between the second sidewall 46b of cabinet 14 and the eaves 32 of lid 20 along the second sidewall 46b of cabinet 14.
As shown in Figure 13 B, the secondary cell 10e of 5th variation has the knot roughly the same with above-mentioned secondary cell 10 Structure, it is different in the following areas.
That is, air introduction part 58 has the first through hole 122A of the side wall of the side for the eaves 32 for being formed in lid 20.It dissipates There is the second through hole 122B, the second through hole 122B to be formed in the side wall phase with the side of the eaves 32 of lid 20 in hot portion 62 Pair the other side side wall.Heat delivery section 60 is arranged between the roof 30 of lid 20 and cabinet 14, at least will be in cabinet 14 The heat of generation and the air 48 imported by the first through hole 122A are defeated towards the second through hole 122B of radiating part 62 together It send.
Above-mentioned 4th variation and 5th variation are suitable for the higher feelings of load of the electric system such as summer or winter This electric discharge such as condition exports longer situation of higher or time.But the relationship since through hole being arranged in lid 20, absolutely It is hot lower, therefore changed when the load of the electric system such as spring or autumn is lower, or in power generations such as such as wind-power electricity generations When the discharge times such as equalization are shorter, hole plug will be preferably penetrated through.
In addition, secondary cell of the invention is not limited to above embodiment, without departing from the scope of the gist of the present invention, when Various structures can so be used.For example, in the above example, it sets vacuum insulation structure simultaneously by cabinet and lid, Atmosphere heat insulating construction can be set simultaneously by cabinet and lid.Certainly, lid can also be set to atmosphere heat insulating construction, by cabinet It is set as vacuum insulation structure, lid can also be set to vacuum insulation structure, sets atmosphere heat insulating construction for cabinet.

Claims (17)

1. a kind of secondary cell comprising:
The cabinet (14) of heat insulating construction, upper surface have opening, and inside is accommodated with the combination being made of multiple monocells (16) Battery (18)；
The lid (20) of heat insulating construction closes the opening of the cabinet (14)；And
Air duct (50) is arranged between the cabinet (14) and the lid (20), and fluid (48) circulates inside it,
The air duct (50) is arranged below the lid (20),
Sand (24) are provided between the air duct (50) and the assembled battery (18),
The air duct (50) includes
Metal fluid introduction part (58), is imported into the fluid (48)；And
Metal heat delivery section (60), setting are arranged in the downstream side of the fluid introduction part (58) described It is at least that the heat and the fluid (48) that generate in the cabinet (14) is defeated together between lid (20) and the cabinet (14) It send；And
Metal radiating part (62) is arranged in the downstream side of the heat delivery section (60), by the heat and the stream Body (48) is discharged outward together,
The lid (20) has roof (30) and eaves (32), and the upper surface to close the cabinet (14) is set in a manner of being open It sets,
The fluid introduction part (58) along the cabinet (14) the first side wall (46a), and towards the lid (20) It is arranged between the eaves (32) and the first side wall (46a) of the cabinet (14),
The heat delivery section (60) is arranged between the roof (30) and the cabinet (14) of the lid (20),
The radiating part (62) is between the second sidewalls (46b) of the cabinet (14) and the eaves (32) of the lid (20) Start, is arranged along the second sidewall (46b) of the cabinet (14), wherein the second sidewall (46b) and described first Side wall (46a) is opposite.
2. a kind of secondary cell comprising:
The cabinet (14) of heat insulating construction, upper surface have opening, and inside is accommodated with the combination being made of multiple monocells (16) Battery (18)；
The lid (20) of heat insulating construction closes the opening of the cabinet (14)；And
Air duct (50) is arranged between the cabinet (14) and the lid (20), and fluid (48) circulates inside it,
It is filled out between the cabinet (14) and the gap and the cabinet (14) and the lid (20) of the assembled battery (18) Filled with sand (24),
The air duct (50) at least has the multiple fins (78) extended towards the assembled battery (18),
The air duct (50) includes
Metal fluid introduction part (58), is imported into the fluid (48)；And
Metal heat delivery section (60), setting are arranged in the downstream side of the fluid introduction part (58) described It is at least that the heat and the fluid (48) that generate in the cabinet (14) is defeated together between lid (20) and the cabinet (14) It send；And
Metal radiating part (62) is arranged in the downstream side of the heat delivery section (60), by the heat and the stream Body (48) is discharged outward together,
The lid (20) has roof (30) and eaves (32), and the upper surface to close the cabinet (14) is set in a manner of being open It sets,
The fluid introduction part (58) along the cabinet (14) the first side wall (46a), and towards the lid (20) It is arranged between the eaves (32) and the first side wall (46a) of the cabinet (14),
The heat delivery section (60) is arranged between the roof (30) and the cabinet (14) of the lid (20),
The radiating part (62) is between the second sidewalls (46b) of the cabinet (14) and the eaves (32) of the lid (20) Start, is arranged along the second sidewall (46b) of the cabinet (14), wherein the second sidewall (46b) and described first Side wall (46a) is opposite.
3. secondary cell according to claim 1 or 2, which is characterized in that
The air duct (50) is made of metal,
The secondary cell has board member (52), is arranged between the assembled battery (18) and the air duct (50), until There is electrical insulating property less.
4. secondary cell according to claim 1 or 2, which is characterized in that
At least described the first side wall (46a) of the cabinet (14) and the second sidewall (46b) are respectively made of metal,
The fluid introduction part (58) and the first side wall (46a) of the cabinet (14) are separately positioned,
The radiating part (62) contacts setting with the second sidewall (46b) of the cabinet (14).
5. secondary cell according to claim 4, which is characterized in that
Between the fluid introduction part (58) and the first side wall (46a) of the cabinet (14), it is gripped with padded coaming (64)。
6. secondary cell according to claim 1 or 2, which is characterized in that
The fluid introduction part (58) includes
Fluid supply unit (66) is supplied to from the fluid (48) that external fan (54) is arranged in；And
Fluid guide (68), the fluid (48) guidance for being fed to the fluid supply unit (66) are defeated to the heat Portion (60) are sent,
In the channeling direction of the fluid (48) of the fluid guide (68) are as follows: along relative to the fluid supply unit (66) direction of the supply of the fluid (48) is the face of normal, and towards the direction of the roof of the lid (20) (30).
7. secondary cell according to claim 6, which is characterized in that
The fluid supply unit (66) has gas chamber (70),
The pipeline stenosis of the outlet of the gas chamber (70) is narrow.
8. secondary cell according to claim 1 or 2, which is characterized in that
Temperature in the temperature of the fluid (48) of the radiating part (62), relative to the fluid (48) in the fluid introduction part (58) Degree, at+60 DEG C or less.
9. secondary cell according to claim 1 or 2, which is characterized in that
The width direction of the air duct (50) is the direction in parallel of the monocell (16), and the length direction of the air duct (50) is The series connection direction of the monocell (16).
10. secondary cell according to claim 1 or 2, which is characterized in that
The height of each pipeline of the fluid introduction part (58), the heat delivery section (60) and the radiating part (62) is 10-30mm。
11. secondary cell according to claim 1 or 2, which is characterized in that
The lid (20) is integrated with the air duct (50) formation.
12. secondary cell according to claim 1 or 2, which is characterized in that
The fluid introduction part (58) has the first through hole (122A), and first through hole (122A) is formed in the lid (20) side wall of the side of the eaves (32),
The heat delivery section (60) is arranged between the roof (30) and the cabinet (14) of the lid (20), at least By the heat generated in the cabinet (14) and the fluid (48) that is imported by first through hole (122A) court together It is conveyed to the radiating part (62),
The radiating part (62) has the second through hole (122B), and second through hole (122B) is formed in the lid (20) The eaves (32) the other side side wall, the side wall of the other side is opposite with the side wall of the side.
13. secondary cell according to claim 1 or 2 comprising:
Heater (22), setting is in the cabinet (14)；And
Heat-insulating material (114) is arranged between the air duct (50) and the cabinet (14), and opening than the cabinet (14) Open area is narrow,
The cabinet (14) has the first side wall (46a) and second sidewall (46b) relative to each other,
The heat-insulating material (114) is arranged in the cabinet (14) close to the first side wall (46a), the first side wall (46a) is the introduction side of the fluid (48) based on the air duct (50).
14. a kind of secondary cell comprising:
The cabinet (14) of heat insulating construction, upper surface have opening, and inside is accommodated with the combination being made of multiple monocells (16) Battery (18)；
The lid (20) of heat insulating construction closes the opening of the cabinet (14)；And
Air duct (50) is arranged between the cabinet (14) and the lid (20), and fluid (48) circulates inside it,
The air duct (50) is arranged below the lid (20),
Sand (24) are provided between the air duct (50) and the assembled battery (18),
The air duct (50) includes
Metal fluid introduction part (58), is imported into the fluid (48)；And
Metal heat delivery section (60), setting are arranged in the downstream side of the fluid introduction part (58) described It is at least that the heat and the fluid (48) that generate in the cabinet (14) is defeated together between lid (20) and the cabinet (14) It send；And
Metal radiating part (62) is arranged in the downstream side of the heat delivery section (60), by the heat and the stream Body (48) is discharged outward together,
The lid (20) has roof (30) and eaves (32), and the upper surface to close the cabinet (14) is set in a manner of being open It sets,
The fluid introduction part (58) along the cabinet (14) the first side wall (46a), and towards the lid (20) It is arranged between the eaves (32) and the first side wall (46a) of the cabinet (14),
The heat delivery section (60) is arranged between the roof (30) and the cabinet (14) of the lid (20), and It is piped from the center portion of the cabinet (14) to peripheral portion in vortex-like,
The radiating part (62) is from the first side wall (46a) of the cabinet (14) and the eaves (32) of the lid (20) Between along the cabinet (14) the first side wall (46a) be arranged.
15. a kind of secondary cell comprising:
The cabinet (14) of heat insulating construction, upper surface have opening, and inside is accommodated with the combination being made of multiple monocells (16) Battery (18)；
The lid (20) of heat insulating construction closes the opening of the cabinet (14)；And
Air duct (50) is arranged between the cabinet (14) and the lid (20), and fluid (48) circulates inside it,
It is filled out between the cabinet (14) and the gap and the cabinet (14) and the lid (20) of the assembled battery (18) Filled with sand (24),
The air duct (50) at least has the multiple fins (78) extended towards the assembled battery (18),
The air duct (50) includes
Metal fluid introduction part (58), is imported into the fluid (48)；And
Metal heat delivery section (60), setting are arranged in the downstream side of the fluid introduction part (58) described It is at least that the heat and the fluid (48) that generate in the cabinet (14) is defeated together between lid (20) and the cabinet (14) It send；And
Metal radiating part (62) is arranged in the downstream side of the heat delivery section (60), by the heat and the stream Body (48) is discharged outward together,
The lid (20) has roof (30) and eaves (32), and the upper surface to close the cabinet (14) is set in a manner of being open It sets,
The fluid introduction part (58) along the cabinet (14) the first side wall (46a), and towards the lid (20) It is arranged between the eaves (32) and the first side wall (46a) of the cabinet (14),
The heat delivery section (60) is arranged between the roof (30) and the cabinet (14) of the lid (20), and It is piped from the center portion of the cabinet (14) to peripheral portion in vortex-like,
The radiating part (62) is from the first side wall (46a) of the cabinet (14) and the eaves (32) of the lid (20) Between along the cabinet (14) the first side wall (46a) be arranged.
16. a kind of secondary cell comprising:
The cabinet (14) of heat insulating construction, upper surface have opening, and inside is accommodated with the combination being made of multiple monocells (16) Battery (18)；
The lid (20) of heat insulating construction closes the opening of the cabinet (14)；And
Air duct (50) is arranged between the cabinet (14) and the lid (20), and fluid (48) circulates inside it,
The air duct (50) is arranged below the lid (20),
Sand (24) are provided between the air duct (50) and the assembled battery (18),
The air duct (50) includes
Metal fluid introduction part (58), is imported into the fluid (48)；And
Metal heat delivery section (60), setting are arranged in the downstream side of the fluid introduction part (58) described It is at least that the heat and the fluid (48) that generate in the cabinet (14) is defeated together between lid (20) and the cabinet (14) It send；And
Metal radiating part (62) is arranged in the downstream side of the heat delivery section (60), by the heat and the stream Body (48) is discharged outward together,
The lid (20) has roof (30) and eaves (32), and the upper surface to close the cabinet (14) is set in a manner of being open It sets,
The fluid introduction part (58) has the through hole of the central portion for the roof (30) for being formed in the lid (20) (120),
The heat delivery section (60) is arranged between the roof (30) and the cabinet (14) of the lid (20), at least The heat generated in the cabinet (14) is conveyed together with the fluid (48) imported by the through hole (120),
The radiating part (62) at least includes the first radiating part (62A), from the first side walls (46a) of the cabinet (14) with Start between the eaves (32) of the lid (20), is arranged along the first side wall (46a) of the cabinet (14)；And the Two radiating parts (62B) are opened between the second sidewalls (46b) of the cabinet (14) and the eaves (32) of the lid (20) Begin, be arranged along the second sidewall (46b) of the cabinet (14), wherein the second sidewall (46b) and first side Wall (46a) is opposite.
17. a kind of secondary cell comprising:
The cabinet (14) of heat insulating construction, upper surface have opening, and inside is accommodated with the combination being made of multiple monocells (16) Battery (18)；
The lid (20) of heat insulating construction closes the opening of the cabinet (14)；And
Air duct (50) is arranged between the cabinet (14) and the lid (20), and fluid (48) circulates inside it,
It is filled out between the cabinet (14) and the gap and the cabinet (14) and the lid (20) of the assembled battery (18) Filled with sand (24),
The air duct (50) at least has the multiple fins (78) extended towards the assembled battery (18),
The air duct (50) includes
Metal fluid introduction part (58), is imported into the fluid (48)；And
Metal heat delivery section (60), setting are arranged in the downstream side of the fluid introduction part (58) described It is at least that the heat and the fluid (48) that generate in the cabinet (14) is defeated together between lid (20) and the cabinet (14) It send；And
Metal radiating part (62) is arranged in the downstream side of the heat delivery section (60), by the heat and the stream Body (48) is discharged outward together,
The lid (20) has roof (30) and eaves (32), and the upper surface to close the cabinet (14) is set in a manner of being open It sets,
The fluid introduction part (58) has the through hole of the central portion for the roof (30) for being formed in the lid (20) (120),
The heat delivery section (60) is arranged between the roof (30) and the cabinet (14) of the lid (20), at least The heat generated in the cabinet (14) is conveyed together with the fluid (48) imported by the through hole (120),
The radiating part (62) at least includes the first radiating part (62A), from the first side walls (46a) of the cabinet (14) with Start between the eaves (32) of the lid (20), is arranged along the first side wall (46a) of the cabinet (14)；And the Two radiating parts (62B) are opened between the second sidewalls (46b) of the cabinet (14) and the eaves (32) of the lid (20) Begin, be arranged along the second sidewall (46b) of the cabinet (14), wherein the second sidewall (46b) and first side Wall (46a) is opposite.
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